Socket-wrench.



PA'l'munu r'ri. 26, 1907.

C. MILLER. SOCKET WRENCH.

APPLICATION FILED DEO.7. 1905.

,l UNITED sTATEs PATENT oEEioE.

CHARLES MILLER, OFl SYRACUSE, NEW YORK, ASSIGN OR TO ELIZABETH M. DANES.

SOCKET-WRENCH- Specification of Letters Patent.

Patented reis. 26, 1907.

Application led December 7,1905. Serial No. 290,720.

.To all whom t may concern." p l Be it known that I, CHARLES MILLER, of

Syracuse, in the county of Onondaga, in the State of New York, have invented new and vuseful Improvements in Socket-Wrenches, of

which the following, taken in connection with the accom anying drawings, is a full, clear, and exact description.

This invention relates to the class' of Wrenches 'which are composed of a main bar provided at one end with a socket for enagement with either a nut or a head of a bolt and provided at the op osite end with a transverse bar serving as a andle for yturning the same and which are -commonly known as 2T-socket Wrenches. y The main object of the present invention is to provide a wrench of the above type with a nut socket member which can be readily removed and attached to the bar, so as to permit the use of various-sized sockets, and thereby rendering the wrench applicable to different nuts or bolt-heads.

Another object of the invention is to provide a wrench composed of parts having interchangeable connections, so as to enable the wrench to be conveniently lengthened or shortened to accommodate itself to various conditions which may arise as to the location of a nut required to be turned.

Furthermore, an object of this invention is to produce a Wrench of the aforesaid character which shall be simple, strong, and durable in its construction and shall be very -ght in weight and vat the same time inexpensive'to manufacture. U

Other objects of the invention will be apparent by the novel combination and arrangement ofthe com onent parts ofthe T-socket wrench hereina ter fully described, and set forth in the claims. I i.

-In the accompanying drawin s, Flgure 1 1s a side view of a' socket-Wrenc embodying my invention. Fig. 2 is also a sldevlew showing the wrench extended by the lnterchanging of arts. Figs. 3 and 4 are enlarged longitudlna sections on the dotted lines X and Y Y, respectively, in Fig. 1; and Fig. 5 1s a transverse section on the dotted line Z Z inFig. 3. s

Similar letters of reference lndlcate corresponding parts.

lillustrated in Fig. 3 of the drawings.

, vided with a friction-plate d.

I A denotes the main bar p of the wrench, which 1s composed of a steel tube preferably formed square in cross-section, to one end of which bar is permanently secured a coupling B, consisting of a cast-metal sleeve a, embracing the bar and formed correspondingly in cross-section and which extends beyond the end ofthe bar and preferably enlarged to form a socket b. In one of the Walls of this socket bis formed a longitudinal channel c, in which is itted a plat d, preferably secured therein by means of a lvet e, passing through the said wall and outer end portion of the plate. This plate has its mam portion deiiected from the channel, so as to produce a spring, as shown in Fig. 3 of the drawings.

C denotes a stem which is inserted into the socket b and shaped correspondingly in cross-section to prevent the said stem from turning therein and which is formed on its outer end with a head f, abutting against the end of the coupling and provided with a nut-socket g, This stem extends substantially the entire depth of the socket and is` completely embraced thereby, and it is securely retained therein bv frictional engagement with the vaforesaid sprin -plate 11,-

whereby it can be readily remove when required. I prefer to form the said stern` hollow in order to reduce its weight, and vthus less friction is required to sustain the same.

To cause the spring-plate d to obtain a morei secure hold on the stem, the latter may be'E provided with a recess h, disposed to beengaged by the curved portion of the plateps providing each of the sides of the squari; stem with a recess it is obvious that n the stem may be inserted into the socket b with any side presented to the spring-plate d.

I propose to provide a set of stems adapted to be interchangeably inserted into the socket b of the bar and make the sockets of these stems in various sizes to accommodate the Wrench to different standard-sized nuts. It is obvious that each stem may be pro- However, such plan has been found undesirable in practice, not only by the increased c'ost of manufacture, but by reason of the liability of the springs being bent or broken off from the' stems when the latter are not in use, caused by the IOO said plates becoming caught on some object short wrench when required. While I preor falling of the stems upon a hard surface incident to rough and careless handling of the same, particularly during transportation.

The outer end of the bar A is provided with a T-coupling D, referably composed of cast metal and provided with an interior longitudinal channel a', in which is secured a spring-plate b, frictionally engaging the bar and retaining the same in the coupling. The longitudinal and transverse portions of this T-coupling are formed correspondingly square in cross-section, and in said transversev portion is provided a channel c', in which is secured a spring-plate d.

A denotes a supplemental bar which is also composed of a steel tube and formed square in cross-section correspondingly with the bar A and T-coupling. Said bar A is generally inserted through the transverse ortion of the T-coupling to serve as a crossar or handle for turning the wrench. One

' end of the bar A is provided with a couplin B', preferably composed of cast metal an consisting of a sleeve e embracing the bar and extending beyond the 'end of the bar and enlarged at the extended portion to form a socket fwhich is square 1n crosssection correspondin ly with the coupling D and aforesaid soc et b. Said socket f is also formed Awith a longitudinal interior channel which is provided with a springplate. Inasmuch as this channel and springp)late are identical with those of the couplings and B, they do not require illustration. By this described construction it isvobvious that the T-'coupling D and coupling B are adapted to be interchangeably connected to the bars A and A whereby the outer end of the bar A may be inserted into the socket of the bar A for the purpose of lengthening the wrench when required. When the wrench is thus extended, the T-coupling D is ap lied to the lain end of the bar A', inI

whic

instance I (provide an additional bar A2, Which is inserte through the transverse porltion of the said coupling to serve as a cross-bar or handle, as -shown in Fig. 2 of the drawings. It will be understood that any convenient number `of these sections or bars may be employed, so as to ermit the wrench to be extended as may e required. It is obvious that the stem C of the nut-socket can be insertedinto the socket of the. shorter bar A', ifdesired, in which case the T-coupling would .be a plied to the bar and themain bar inserte through the said T-coupling to serve as a handle. It will be observed that the interiors of the T-coupling and the aforesaid socket b are of corresponding dimensions, whereby the stem C may be applied to the said T-coupling to produce a very fer 'to form these bars of steel tubes and form the couplings of cast metal, at the same time it will be understood that the said bars may be composed of castings and their couplings formed integral therewith. However, by forming the parts hollow, as shown, the wrench is rendered very light in Weight. At the same ,time it possesses requisite strength. This lightness in conjunction with the interchangeability of the parts renders the wrench very convenient for transportation.

What I claim as my invention is.-

1. -A wrench of the class specified comprising a bar provided at one end with a detachable stem formed with a nut-socket, a T coupling provided with a longitudinally-disposed spring-plate by which the bar is frictionally held in said coupling, and provided with a transversely-dis osed spring-plate, and a cross-bar inserte through said coupling and sustained therein by frictional engagement with the latter spring-plate as set forth.

2. A wrench of the class specified compris-v ing a main bar provided at one end with a detachable nut socket member, a detachable T- coupling on the opposite end of the bar, a cross-bar inserted removably in said coupling, and friction-plates retaining the two bars in their connections, said bars being interchangeable in relation to the said coupling as set forth. l

3. An extensible socket-Wrench comprising a main bar provided at one end witha socket having a spring-plate therein, a stem inserted in said socket and sustained removably by frictional engagement with the spring-plate and formed `with a nut-socket, a T-coupling provided with like friction-plates and detachably applied to the opposite end of the bar, a cross-bar inserted removably through the T-coupling and providedat one end with a socket having a friction-plate, said cross-` bar being adapted to be connected to the vmain bar interchangeably with said coupling, and the latter adapted to be applied to the cross-bar as set forth and shown.

4. An extensible socket-wrench comprising a bar provided at one end with a socket, a stem' supported removably in said socket and provided with a nut-socket, a hollow T- shaped member into which the opposite end of the bar is removably inserted, said barsocket and T-shaped member being of corresponding dimensions in cross-section to permit the bar and stem to be interchangeably applied to said T-shaped member as set forth.

5. An extensible socket-wrench comprising a main bar rovided at one end with a longitudinal soc et and having its opposite end plain, a T-coupling, a supplemental bar IOO IOS

IIO

provided at one end vcnfith s. longitudinal ably applied to the sockets of the bars and T v soclzeta) corres gndixg Wit'h thedsocket of tle coupling as Vsei: forth. mam ar sa1 ars omg orme' orrespon v ingly angfular n cross-section to render the v CHARLES MILLER 5 same interchangeable in their connections d Witnesses:

with the T-coupl' anda stem formed with J. J. LAA/ss., a nut-socket and a apted to be interehange- L.r H. FULMER. 

